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EP0917370A3 - Signal processing device and method for switching signal processors therefor - Google Patents

Signal processing device and method for switching signal processors thereforDownload PDF

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Publication number
EP0917370A3
EP0917370A3EP98309387AEP98309387AEP0917370A3EP 0917370 A3EP0917370 A3EP 0917370A3EP 98309387 AEP98309387 AEP 98309387AEP 98309387 AEP98309387 AEP 98309387AEP 0917370 A3EP0917370 A3EP 0917370A3
Authority
EP
European Patent Office
Prior art keywords
packet
nit
mpeg2
signal
digital broadcast
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98309387A
Other languages
German (de)
French (fr)
Other versions
EP0917370A2 (en
Inventor
Katsumi Sony Corporation Ohishi
Naohisa Sony Corporation Kitazato
Kenji Sony Corporation Inose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP31731097Aexternal-prioritypatent/JP3823492B2/en
Priority claimed from JP07378498Aexternal-prioritypatent/JP3903578B2/en
Application filed by Sony CorpfiledCriticalSony Corp
Priority to EP08019437ApriorityCriticalpatent/EP2018067A3/en
Publication of EP0917370A2publicationCriticalpatent/EP0917370A2/en
Publication of EP0917370A3publicationCriticalpatent/EP0917370A3/en
Withdrawnlegal-statusCriticalCurrent

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Abstract

A digital broadcast program broadcast with a first network is transmitted to a second network. A tuner 41 selects digital broadcast signal having a predetermined transmission frequency and ECC decoder 43 obtains MPEG2 TS packet S3 as the digital broadcast data on the digital satellite broadcasting. An NIT detecting circuit 44 detects NIT from the MPEG2 TS packet S3 and a control unit 31 changes the NIT to obtain a table NITb applicable to CATV. A NIT substitution circuit 48 detects NIT from the MPEG2 TS packet S3 and substitutes table the NITb for the NIT to obtain MPEG2 TS packet S4 as the digital broadcast data on the CATV. Then, an error correct code is added to the MPEG2 TS packet S4 and the added packet S4 is modulated. Then, modulated one is frequency-converted to obtain digital broadcast signal BS-1 having a predetermined transmission frequency for the CATV. Further, a signal processing device including spare (redundant) signal processors simplified in their configurations and simple in their management may be obtained by this invention. Switch units corresponding to N signal processors in use, of switch units 33-1 through 33- (N+1) are brought into conduction, and the switch unit corresponding to the remaining one signal processor set as a spare and placed in a standby state is brought to a cut-off state. Signals outputted from the switch units 33-1 through 33-(N+1) are added together and the result of addition is sent to a CATV transmission path 13. When any of the N signal processors in use fails and a user inputs information about its failure through an operation unit 35; the faulty signal processor is newly kept in reverse and standby state. As an alternative to this, each signal processor kept in reverse and standby state up to now is placed in a used state. Thereby, it is possible to construct a spare signal processor as being unfixed.
EP98309387A1997-11-181998-11-17Signal processing device and method for switching signal processors thereforWithdrawnEP0917370A3 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
EP08019437AEP2018067A3 (en)1997-11-181998-11-17Signal processing device and method for switching signal processors thereof

Applications Claiming Priority (6)

Application NumberPriority DateFiling DateTitle
JP317310/971997-11-18
JP31731097AJP3823492B2 (en)1997-11-181997-11-18 Signal processing apparatus and signal processing method
JP323085/971997-11-25
JP323085971997-11-25
JP07378498AJP3903578B2 (en)1997-11-251998-03-23 Signal processing apparatus and method, and recording medium
JP73784/981998-03-23

Related Child Applications (1)

Application NumberTitlePriority DateFiling Date
EP08019437ADivisionEP2018067A3 (en)1997-11-181998-11-17Signal processing device and method for switching signal processors thereof

Publications (2)

Publication NumberPublication Date
EP0917370A2 EP0917370A2 (en)1999-05-19
EP0917370A3true EP0917370A3 (en)2007-10-24

Family

ID=27301317

Family Applications (2)

Application NumberTitlePriority DateFiling Date
EP98309387AWithdrawnEP0917370A3 (en)1997-11-181998-11-17Signal processing device and method for switching signal processors therefor
EP08019437AWithdrawnEP2018067A3 (en)1997-11-181998-11-17Signal processing device and method for switching signal processors thereof

Family Applications After (1)

Application NumberTitlePriority DateFiling Date
EP08019437AWithdrawnEP2018067A3 (en)1997-11-181998-11-17Signal processing device and method for switching signal processors thereof

Country Status (2)

CountryLink
US (1)US6480551B1 (en)
EP (2)EP0917370A3 (en)

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Also Published As

Publication numberPublication date
EP2018067A3 (en)2009-08-12
US6480551B1 (en)2002-11-12
EP2018067A2 (en)2009-01-21
EP0917370A2 (en)1999-05-19

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